Flash pyrolysis of coal in non-reactive gases
Coal pyrolysis experiments were carried out with a New Mexico subbituminous coal in the presence of nonreactive He, N/sub 2/, and Ar gases in an entrained downflow tubular reactor. The percent carbon conversions to CH/sub 4/, C/sub 2/H/sub 4/, BTX, CO and CO/sub 2/ were determined as a function of temperature and residence time at 50 psi. In helium atmosphere, the yields of methane and CO/sub x/ reached asymptotic values in about 1 sec and ethylene was produced throughout the length of the BNL reactor corresponding to a coal particle residence time of 1.7 sec. The relative yields of individual products were influenced by the pyrolysis atmosphere but the total carbon conversion remained almost unaffected. A reduction in the cationic content of coal by acid treatment enhanced the production of CO and CO/sub 2/ but inhibited the formation of ethylene. 13 references, 4 figures, 3 tables.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5964900
- Report Number(s):
- BNL-35947; CONF-850417-15; ON: DE85008286
- Resource Relation:
- Conference: 189. national meeting of the American Chemical Society, Miami, FL, USA, 28 Apr 1985; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BENZENE
CHEMICAL REACTION YIELD
CARBON DIOXIDE
CARBON MONOXIDE
ETHYLENE
METHANE
SUBBITUMINOUS COAL
PYROLYSIS
TOLUENE
XYLENES
ARGON
CHEMICAL REACTORS
EXPERIMENTAL DATA
HELIUM
MEDIUM PRESSURE
NITROGEN
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
ALKANES
ALKENES
ALKYLATED AROMATICS
AROMATICS
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
DATA
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROCARBONS
INFORMATION
MATERIALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
THERMOCHEMICAL PROCESSES
YIELDS
010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987)